critical
9.8
CWE
20 787
Advisory Published
Updated
Advisory Published

CVE-2020-7454: FreeBSD Kernel NAT Out-Of-Bounds Access Remote Code Execution Vulnerability

First published: Wed May 13 2020(Updated: )

In FreeBSD 12.1-STABLE before r360971, 12.1-RELEASE before p5, 11.4-STABLE before r360971, 11.4-BETA1 before p1 and 11.3-RELEASE before p9, libalias does not properly validate packet length resulting in modules causing an out of bounds read/write condition if no checking was built into the module.

Credit: secteam@freebsd.org

Affected SoftwareAffected VersionHow to fix
FreeBSD FreeBSD=11.3
FreeBSD FreeBSD=11.3-p1
FreeBSD FreeBSD=11.3-p2
FreeBSD FreeBSD=11.3-p3
FreeBSD FreeBSD=11.3-p4
FreeBSD FreeBSD=11.3-p5
FreeBSD FreeBSD=11.3-p6
FreeBSD FreeBSD=11.3-p7
FreeBSD FreeBSD=11.3-p8
FreeBSD FreeBSD=11.4
FreeBSD FreeBSD=11.4-beta1
FreeBSD FreeBSD=12.1
FreeBSD FreeBSD=12.1-p1
FreeBSD FreeBSD=12.1-p2
FreeBSD FreeBSD=12.1-p3
FreeBSD FreeBSD=12.1-p4

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Reference Links

Frequently Asked Questions

  • What is CVE-2020-7454?

    CVE-2020-7454 is a vulnerability in the FreeBSD Kernel that allows remote attackers to execute arbitrary code.

  • Is authentication required to exploit CVE-2020-7454?

    No, authentication is not required to exploit this vulnerability.

  • How severe is CVE-2020-7454?

    CVE-2020-7454 has a severity rating of 9.8, which is classified as critical.

  • How can I fix CVE-2020-7454?

    To fix CVE-2020-7454, update to the latest version of FreeBSD Kernel and apply any available patches.

  • Where can I find more information about CVE-2020-7454?

    You can find more information about CVE-2020-7454 in the FreeBSD Security Advisory (FreeBSD-SA-20:12.libalias.asc) and the ZeroDayInitiative advisories (ZDI-20-660 and ZDI-20-659).

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